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Inventor's Personal Thermometer Preference
- Thomas Allbut invented the first practical rectal thermometer in 1866 but preferred armpit use himself.
- He worried patients would rebel against frequent rectal exams, showing a humorous side to his serious work.
Forehead Thermometers' Inaccuracy Revealed
- Infrared forehead thermometers adjust readings to compensate for environment but are often inaccurate.
- Studies show they frequently fail to detect fevers, especially in 5 out of 6 cases, questioning their reliability.
Cold War Spy Planes' Unique Features
- Cold war spy planes had rearview mirrors to spot contrails they left, compromising stealth.
- U-2 spy planes require a driver guiding the pilot on landing due to difficult controls and design.